CN110151306A - A kind of electric pulse parallel pole - Google Patents
A kind of electric pulse parallel pole Download PDFInfo
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- CN110151306A CN110151306A CN201910415420.9A CN201910415420A CN110151306A CN 110151306 A CN110151306 A CN 110151306A CN 201910415420 A CN201910415420 A CN 201910415420A CN 110151306 A CN110151306 A CN 110151306A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/021—Cleaning or etching treatments
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
- C23C14/165—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon by cathodic sputtering
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/58—After-treatment
- C23C14/5806—Thermal treatment
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/20—Other heavy metals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00059—Material properties
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00107—Coatings on the energy applicator
- A61B2018/00148—Coatings on the energy applicator with metal
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00702—Power or energy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00982—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
Abstract
The present invention relates to medical instruments field, especially a kind of electric pulse parallel pole.Existing electric pulse parallel pole gos deep into inside of human body and needs to do open wound, there are problems that increasing Principle of Pain, improves operation risk.The present invention provides a kind of electric pulse parallel poles to solve foregoing problems, it includes two electrodes, described two electrodes are fine needle made of Ultimum Ti, fine needle from front end backward formation length be T2 electric discharge active section, wrap up insulating layer in the fine needle surface of self discharge active section backward, two electrodes are set in same interposing catheter, and electric discharge active section can elasticity be unfolded after releasing interposing catheter forward and parallel opposite keeping parallelism space D 2, electric discharge active section end set guide frame.The present invention can be using noninvasive feeding inside of human body of endoscope passages such as endoscopic apparatus, or is directly entered in vivo through human body own channels, makees electric pulse ablation to tumor tissues, and ablation effect is good, and can infiltrate through tumor tissues for subsequent dose and create conditions.
Description
Technical field
The present invention relates to medical instruments field, especially a kind of electric pulse parallel pole.
Background technique
The existing electric pulse for forming impulse electric field ablation tumour using two electrodes connecting with impulse generator is flat
Row electrode, but this existing electric pulse parallel pole can only carry out percutaneous puncture in treating, suitable for the tumour close to skin
Tissue；For the lesion of inside of human body tissue, due to the limitation of blood vessel on the way and nerve etc., it is difficult for electrode to be needled into lesion group
Inside is knitted, thus must be external by pathological tissues exposure, it is treated, very big wound is caused to patient, increase patient's pain
Pain and operation risk.
Summary of the invention
The technical problem to be solved in the present invention and the technical assignment of proposition are that existing electric pulse parallel pole gos deep into human body
Portion needs to do open wound, increases Principle of Pain, improves the problems such as operation risk, the present invention provides a kind of electric pulse is parallel
Electrode, the parallel pole can use the noninvasive feeding inside of human body of the endoscope passages such as endoscopic apparatus, or directly through human body from
Body channel enters in vivo, carries out electric pulse ablation to tumor tissues, is then formed on tumour cell using aforementioned electric pulse
Electroporation increases cell permeability and creates conditions for subsequent dose, so that enhancing tumor tissues ablation effect becomes possible.
The present invention solves the technical solution that technical problem uses: a kind of electric pulse parallel pole, including two electrodes, described
Two electrodes are metal fine needle, and fine needle is from the front end electric discharge active section that formation length is T2 backward, self discharge active section
Insulating layer is wrapped up on fine needle surface backward, it is characterized in that described two electrodes are set in same interposing catheter, the interposing catheter
It can go deep into through human body natural's cavity or by scope service aisle internal, described two electrodes are made of Ultimum Ti
Fine needle, the respective electric discharge active section of two electrodes can elasticity expansion and parallel opposite, two electric discharges after releasing interposing catheter forward
The parallel spacing of active section is D2, and the end of two electric discharge active sections is equipped with guide frame.The present invention passes through two electrodes and intervention
The combination of conduit enables parallel pole to enter inside of human body through human body natural's cavity or scope service aisle are noninvasive, then utilizes
Guide frame guides two parallel poles inside tumor tissues, and electric discharge active section is close to tumor tissues, so that electrode surrounding
Substantially it is wrapped up, tumour coverage rate is improved, more precise positioning ablated tumor by tumour；Two electric discharge active sections are releasing interposing catheter
It is unfolded afterwards using shape memory effect elasticity, keeping parallelism is opposite, the energy after being powered after two electrodes connect impulse generator
The electric field that even intensity is formed between two parallel poles, effectively shortens ablation time, increases the ablation area of single insertion, controls
Therapeutic effect is good, greatly facilitates doctor and sufferer, not will increase Principle of Pain, while reducing operation risk；Two electric discharge active sections
Only after releasing interposing catheter just can elasticity expansion and parallel opposite, draw back two electrodes after interposing catheter and collapse and be constrained in intervention and lead
In the lumen of pipe.In addition, can also open micropore insertion on human body in conjunction with Minimally Invasive Surgery using the present invention and carry out successive treatment；
In the use of the present invention, two parallel electrodes also need connection impulse generator, latter two electrode that is powered is respectively positive and negative electrode
To form impulse electric field, the impulse generator is the prior art.
As further improving and supplementing to above-mentioned technical proposal, the present invention uses following technical measures: the guiding
Structure is the two electric discharge active sections tips that respectively end is arranged.Two electric discharge working ends setting tip can be convenient directly be pierced into or
It penetrates human body cavity wall to be pierced into inside tumor tissues, which needs image documentation equipment auxiliary to realize.
The guide frame is the guiding piece of a taper, and the electric discharge active section end of described two electrodes is fixed on same cone
The guiding piece of shape, the bigger diameter end of guiding piece and the caliber of interposing catheter match, and two electrodes make two in guiding piece rear setting one
The adjacent electrode fixuture of electrode, described two respective electric discharge active sections of electrode are between guiding piece and electrode fixuture.
Structure on the fixed taper guiding piece in electric discharge active section end of this two electrodes is suitable for tumor tissues in approach channel week
Situation on wall, two electric discharge active sections are bonded tumor tissues between tapered guide part and electrode fixuture, furthermore discharge
The electrode at active section both ends all needs to do insulation processing.
The electric discharge active section corresponds to fine needle surface equipped with groove.Groove can increase the electrode section where electric discharge active section
Surface area, and then increase material launching electronics number, when the fine needle of electrode is close to tumor tissues, these grooves can increase electrode
Surface area, make electron emission quantity increase, improve electric pulse parallel pole work when electric field density.
The groove is the annular groove that fine needle surface is spaced apart along fine needle length direction, or is fine needle surface along fine needle
The continuous helicla flute of length direction, or be circumferential zigzag slot.Groove can be the independent annular groove being spaced apart, can also
To be continuous helicla flute, or circumferential zigzag slot, effect are provided to increase surface area raising electric field density, add simultaneously
Strong development effect.
The fine needle of described two electrodes is that Ultimum Ti of the nickel mass fraction between 54.5%-57.0% is made,
Tantalum is plated on the corresponding fine needle surface of the electric discharge active section, and fine needle made of the Ultimum Ti uses magnetron sputtering coater
Carry out plating tantalum, sputtering power 90W when plated film, 120 DEG C of substrate temperature, sputtering pressure 0.45Pa, sputtering time 240 minutes；Plate tantalum
The thickness of layer is annealed 1.2 hours at 1~5 μm, and after plating tantalum at 800 DEG C.Electrode is using nickel mass fraction in 54.5%-57.0%
Between Ultimum Ti be made, the critical load of the tantalum coating that the sputter coating obtains and nickel-titanium memory alloy-based body is super
70N is crossed, the two, which combines to consolidate, meets medical application requirement, radiography visibility is improved in parallel pole galvanization, specifically
The radiation opaque for improving electrode facilitates two electrodes of positioning when operation precisely to enter tumor tissues；In 800 DEG C of height after plating tantalum
Temperature annealing 1.2 hours, electrode surface metallographic hard, crisp, poor chemical stability by β-Ta(material) be changed into α-Ta(material more have it is tough
Property, chemical stability is good), while coating surface is uniform, finish is good, it is more smooth in subsequent insertion tumor tissues.According to solid
Electron theo ry on metal in body physics, since, there are potential barrier Wb, electronics will escape necessary from metal between metal surface and the external world
Energy Wb is at least obtained, the function that this electronics overcomes surface potential barrier that must do when escaping from metal surface is work function, the evolution
Function size has decisive action to electron emission power, and the fine needle of electrode is made and plates tantalum using Ultimum Ti here, then
Annealing can greatly increase the evolution quantity of electronics under high-voltage pulse, improve electric field density, enhance ablation effect.
Fine needle made of the Ultimum Ti needs to do following processing before plating tantalum: roughening, blasting treatment；Oil removing,
It is heated 30 minutes using alkaline chemical solution, then deionized water is cleaned repeatedly, then is dried after ten minutes with acetone ultrasonic cleaning.
Tantalum coating can be improved by the treatment process and be attached to firmness on nickel-titanium memory alloy-based body, alkali described in actual use
Property chemical solution be 60g/L oxygen sodium oxide molybdena and 80g/L sodium carbonate mixing liquid.
The present invention provides a kind of electric pulse parallel pole, the parallel pole can use the scopes work such as endoscopic apparatus
Make the noninvasive feeding inside of human body in channel, or directly enter in vivo through human body natural's cavity, electric pulse ablation is carried out to tumor tissues,
Then increase cell permeability on tumour cell using aforementioned electric pulse, create conditions for subsequent dose, to further increase
Possible is become to the ablation effect of tumor tissues.
Detailed description of the invention
Fig. 1: 1 structural schematic diagram of embodiment.
Fig. 2: the electrode structure schematic diagram of embodiment 1.
Fig. 3: 1 operation schematic diagram of embodiment.
Fig. 4: the electric discharge active section schematic diagram of 1 electrode of embodiment.
Fig. 5: 2 operation schematic diagram of embodiment.
In figure: 1. electrodes, 2. electrodes, 3. insulating layers, 4. interposing catheters, 5. guide frames, 6. electrode fixutures, 7. human bodies
Cavity wall, 8. tumor tissues, 9. grooves.
Specific embodiment
The present invention is described further with specific embodiment for explanation with reference to the accompanying drawing.
Embodiment 1 as shown in figures 1-4, a kind of electric pulse parallel pole, including electrode 1 and electrode 2, described two electrodes
It is metal fine needle, and fine needle is from the front end electric discharge active section that formation length is T2 backward, self discharge active section backward thin
Wire surface wraps up insulating layer 3, and two electrodes are set in same interposing catheter 4, the interposing catheter 4 can through human body natural's cavity or
Go deep by scope service aisle internal, described two electrodes are fine needle made of Ultimum Ti, and two electrodes are respectively
Electric discharge active section can the elasticity expansion and parallel opposite after releasing interposing catheter forward, the parallel spacing of two electric discharge active sections is
The end of D2, two electric discharge active sections are equipped with guide frame 5, and the guide frame in the present embodiment is two electric discharge active sections respectively end
The tip of setting.
When work, the elasticity expansion after releasing interposing catheter of the electric discharge active section of two electrodes, keeping parallelism is opposite, then
Two electric discharge active sections are directed through human body cavity wall 7 using the tip of end and are pierced into inside tumor tissues 8, keep electric discharge active section tight
Tumor tissues are pasted, electrode surrounding is wrapped up by tumour substantially, is improved to tumour coverage rate, more precise positioning ablated tumor, described two
A electrode connects impulse generator in advance, and impulse generator latter two electrode that is powered becomes one positive one negative, positive and negative electrode it
Between generate impulse electric field to tumour ablation, two electrode power offs, which are drawn back interposing catheter and collapsed, after ablation is constrained in interposing catheter
Lumen in；Two electric discharge active section elasticity expansion after releasing interposing catheter, keeping parallelism is opposite, forms the electricity of even intensity
, shorten ablation time, increases the ablation area of single insertion, therapeutic effect is good, greatly facilitates doctor and sufferer, Bu Huizeng
Add Principle of Pain, while reducing operation risk.
Further, above-mentioned electric discharge active section corresponds to fine needle surface and is equipped with groove 9, and the groove in the present embodiment is preferably thin
In addition it is continuous along fine needle length direction to be also possible to fine needle surface for the annular groove that wire surface is spaced apart along fine needle length direction
Helicla flute, or circumferential zigzag slot.The surface area that the electrode section where electric discharge active section can be increased using groove, into
And increase material launching electronics number, when the fine needle of electrode is thrusted straightly into tumor tissues, these grooves can increase the surface area of electrode, make
Electron emission quantity increases, and improves the electric field density formed when the work of electric pulse parallel pole；These grooves can be with simultaneously
Enhance development effect, electrode is facilitated to be accurately positioned.
The fine needle of described two electrodes is Ultimum Ti of the nickel mass fraction between 54.5%-57.0%, specifically
It is using Ti-50.8at.%Ni, nickel mass fraction is made of 55.9% Ultimum Ti, then in electric discharge active section pair
Tantalum is plated on the fine needle surface answered, and fine needle made of Ti-50.8at.%Ni memorial alloy carries out plating tantalum using magnetron sputtering coater, plates
Sputtering power 90W when film, 120 DEG C of substrate temperature, sputtering pressure 0.45Pa, sputtering time 240 minutes；The thickness of tantalum layer is plated 1
~5 μm, and anneal 1.2 hours after plating tantalum at 800 DEG C.Fine needle made of the Ti-50.8at.%Ni memorial alloy is in plating tantalum
Before need to do following processing: roughening, blasting treatment；Oil removing is heated 30 minutes using alkaline chemical solution, and then deionized water is anti-
Multiple cleaning, then dried after ten minutes with acetone ultrasonic cleaning.The tantalum coating that sputter coating obtains and nickel-titanium memory alloy-based body
Critical load is more than 70N, and the two, which combines to consolidate, meets medical application requirement, and it is visual that radiography is improved in parallel pole galvanization
Degree specifically improves the radiation opaque of electrode, and two electrodes of positioning when operation is facilitated precisely to enter tumor tissues；After plating tantalum
800 DEG C high annealing 1.2 hours, electrode surface metallographic hard, crisp, poor chemical stability by β-Ta(material) be changed into α-Ta
(material more flexible, chemical stability are good), while coating surface is uniform, finish is good, more in subsequent insertion tumor tissues
It is smooth.The fine needle of electrode is made and plates tantalum using Ultimum Ti, then makes annealing treatment, can be significantly under high-voltage pulse
Increase the evolution quantity of electronics, improve electric field density, enhances ablation effect.
Embodiment 2 is as shown in figure 5, a kind of electric pulse parallel pole and the difference place of embodiment 1 are the guiding knot
Structure 5 is the guiding piece of a taper, and the electric discharge active section end of the electrode 1 and electrode 2 is fixed on the guiding piece of same taper,
The bigger diameter end of guiding piece and the caliber of interposing catheter 4 match, and two electrodes keep two electrodes adjacent in guiding piece rear setting one
Electrode fixuture 6, the electrode section between guiding piece and electrode fixuture 6 include the respective electric discharge active section of two electrodes, electric discharge
The electrode surface at active section both ends has insulating layer, and rest part and embodiment 1 are identical.When work, this two electrodes are put
Structure on the fixed taper guiding piece in electric active section end is suitable for situation of the tumor tissues on approach channel circumference wall, due to
Active section both ends discharge respectively by the constraint of puncture tip and electrode fixuture, tapered guide part is along human body cavity wall 7 when work
It guides interposing catheter 4 to reach 8 position of tumor tissues, then draw back interposing catheter while releasing two electrodes, two electrodes
Elasticity expansion and parallel opposite, two electric discharge active sections between tapered guide part and electrode fixuture after releasing interposing catheter
Tumor tissues are bonded, the ablation that is powered finishes latter two electrode and draws back interposing catheter collapses the lumen for being constrained in interposing catheter again
In.
Claims (7)
1. a kind of electric pulse parallel pole, including two electrodes (1,2), described two electrodes are metal fine needle, and fine needle is certainly
Insulating layer (3) are wrapped up on the front end electric discharge active section that formation length is T2 backward, the fine needle surface of self discharge active section backward,
It is characterized in that described two electrodes (1,2) is set in same interposing catheter (4), the interposing catheter (4) can be through human body natural's cavity
Or go deep by scope service aisle internal, described two electrodes (1,2) are fine needle made of Ultimum Ti, two electricity
Extremely respective electric discharge active section can the elasticity expansion and parallel opposite after releasing interposing catheter forward, two electric discharge active sections it is parallel
Spacing is D2, and the end of two electric discharge active sections is equipped with guide frame (5).
2. electric pulse parallel pole according to claim 1, it is characterized in that the guide frame (5) is two electric discharge active sections
The tip of respective end setting.
3. electric pulse parallel pole according to claim 1, it is characterized in that the guide frame (5) is the guidance of a taper
The electric discharge active section end of part, described two electrodes (1,2) is fixed on the guiding piece of same taper, the bigger diameter end of guiding piece and
The caliber of interposing catheter (4) matches, and two electrodes (1,2) make the adjacent electrode fixuture of two electrodes in guiding piece rear setting one
(6), described two respective electric discharge active sections of electrode (1,2) are located between guiding piece and electrode fixuture (6).
4. according to claim 1 to electric pulse parallel pole described in one of 3, it is characterized in that the electric discharge active section corresponds to fine needle
Surface is equipped with groove (9).
5. electric pulse parallel pole according to claim 4, it is characterized in that the groove (9) is that fine needle surface is long along fine needle
The annular groove that is spaced apart of degree direction, perhaps be fine needle surface along the continuous helicla flute of fine needle length direction or be that circumferential direction is sawed
The slot of tooth form.
6. electric pulse parallel pole according to one of claims 1 to 5, it is characterized in that described two electrodes (1,2) is thin
Needle is that Ultimum Ti of the nickel mass fraction between 54.5%-57.0% is made, the corresponding fine needle of the electric discharge active section
Tantalum is plated on surface, and fine needle made of the Ultimum Ti carries out plating tantalum using magnetron sputtering coater, sputtering power when plated film
90W, 120 DEG C of substrate temperature, sputtering pressure 0.45Pa, sputtering time 240 minutes；The thickness of tantalum layer is plated at 1~5 μm, and is plated
It anneals 1.2 hours after tantalum at 800 DEG C.
7. electric pulse parallel pole according to claim 6, it is characterized in that fine needle made of the Ultimum Ti exists
Need to do following processing before plating tantalum: roughening, blasting treatment；Oil removing is heated 30 minutes, then deionization using alkaline chemical solution
Water cleans repeatedly, then is dried after ten minutes with acetone ultrasonic cleaning.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910415420.9A CN110151306A (en) | 2019-05-17 | 2019-05-17 | A kind of electric pulse parallel pole |
| PCT/CN2019/101270 WO2020232850A1 (en) | 2019-05-17 | 2019-08-19 | Electrical pulse-related parallel electrodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910415420.9A CN110151306A (en) | 2019-05-17 | 2019-05-17 | A kind of electric pulse parallel pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110151306A true CN110151306A (en) | 2019-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910415420.9A Pending CN110151306A (en) | 2019-05-17 | 2019-05-17 | A kind of electric pulse parallel pole |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110151306A (en) |
| WO (1) | WO2020232850A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720965A (en) * | 2022-05-17 | 2022-07-08 | 中国船舶重工集团公司第七一一研究所 | Ultrasonic radar performance test box, detection device and detection method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1163280C (en) * | 1999-06-11 | 2004-08-25 | 中国科学院金属研究所 | Internal flexible supporter for tracts or cavities in human body |
| EP2068739A4 (en) * | 2006-09-14 | 2013-01-23 | Lazure Technologies Llc | Device and method for destruction of cancer cells |
| US9033979B2 (en) * | 2010-06-23 | 2015-05-19 | National University Of Singapore | Articulating ablation and division device with blood flow sensing capability |
| CN102274074A (en) * | 2011-05-03 | 2011-12-14 | 上海微创电生理医疗科技有限公司 | Multi-electrode open-type radio frequency ablation catheter |
| US9993291B2 (en) * | 2013-02-07 | 2018-06-12 | Shanghai Golden Leaf Med Tec Co., Ltd | Radio frequency ablation method, system and radio frequency ablation device thereof |
| BR112015021441A2 (en) * | 2013-03-07 | 2017-07-18 | Arthrocare Corp | electrosurgical systems and methods |
| EP4039185A1 (en) * | 2016-11-11 | 2022-08-10 | National University of Ireland Galway | Devices, systems, and methods for specializing, monitoring, and/or evaluating therapeutic nasal neuromodulation |
| CN106901831A (en) * | 2017-03-23 | 2017-06-30 | 深圳市惠泰医疗器械有限公司 | The arteria renalis stimulates ablating electrode conduit |
-
2019
- 2019-05-17 CN CN201910415420.9A patent/CN110151306A/en active Pending
- 2019-08-19 WO PCT/CN2019/101270 patent/WO2020232850A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720965A (en) * | 2022-05-17 | 2022-07-08 | 中国船舶重工集团公司第七一一研究所 | Ultrasonic radar performance test box, detection device and detection method thereof |
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| Publication number | Publication date |
|---|---|
| WO2020232850A1 (en) | 2020-11-26 |
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